Chrysanthemum plant named &#39;dlfabb13&#39;

ABSTRACT

A new and distinct cultivar of Chrysanthemum plant named ‘DLFABB13’, characterized by its upright plant habit; vigorous growth habit and rapid growth rate; dark green-colored leaves; uniform and freely flowering habit; strong upright flowering stems with numerous inflorescences; decorative-type inflorescences with bright yellow-colored ray florets that when developing are distally greyed red in color giving a bi-colored appearance to the inflorescences; relative tolerance to high production temperatures; resistance to Fusarium Wilt and White Rust; and good postproduction longevity.

CROSS-REFERENCED TO CLOSELY-RELATED APPLICATIONS

Title: Varieties of Chrysanthemum Plants

Inventor/Applicant: Arie Gerard Post

Filed: Nov. 5, 2019

Ser. No.: 62/973,983

Inventor/Applicant hereby claim the benefit of this provisional U.S. Patent Application.

Botanical designation: Chrysanthemum X morifolium.

Cultivar denomination: ‘DLFABB13’.

STATEMENT REGARDING PRIOR DISCLOSURES BY INVENTOR/APPLICANT & ASSIGNEE

A Japanese Plant Breeder's Rights application for the instant plant was filed by the Assignee, Deliflor Royalties B.V. of Maasdijk, The Netherlands on Jul. 10, 2019, application number 34027. Additionally, an European Community Plant Breeder's Rights application for the instant plant was filed by the Assignee, Deliflor Royalties B.V. of Maasdijk, The Netherlands on Jul. 29, 2019, application number 2019/1837. Foreign priority is not claimed to these applications.

The Inventor/Applicant and Assignee assert that no publications nor advertisements relating to sales, offers for sale or public distribution occurred more than one year prior to the effective filing date of this application. Any information about the claimed plant would have been obtained from a direct or indirect disclosure from the Inventor/Applicant and/or the Assignee. Inventor/Applicant and Assignee claim a prior art exemption under 35 U.S.C. 102(b)(1) for disclosure and/or sales prior to the filing date but less than one year prior to the effective filing date.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Chrysanthemum plant, botanically known as Chrysanthemum x morifolium, typically grown as a cut flower Chrysanthemum and hereinafter referred to by the name ‘DLFABB13’.

The new Chrysanthemum plant is a product of a planned breeding program conducted by the Inventor in Maasdijk, The Netherlands. The objective of the breeding program is to create new cut flower Chrysanthemum plants with numerous attractive inflorescences. The new Chrysanthemum plant is a naturally-occurring whole plant mutation of Chrysanthemum x morifolium ‘DLFABB12’, disclosed in U.S. Plant Pat. No. 32,006. The new Chrysanthemum plant was discovered and selected as a single flowering plant from within a population of plants of ‘DLFABB12’ in a controlled greenhouse environment in Maasdijk, The Netherlands in January, 2018.

Asexual reproduction of the new Chrysanthemum plant by vegetative terminal cuttings since January, 2018 has shown that the unique features of this new Chrysanthemum plant are stable and reproduced true to type in successive generations of asexual reproduction.

SUMMARY OF THE INVENTION

Plants of the new Chrysanthemum have not been observed under all possible combinations of environmental conditions and cultural practices. The phenotype may vary somewhat with variations in environmental conditions such as temperature, daylength and light intensity, without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘DLFABB13’. These characteristics in combination distinguish ‘DLFABB13’ as a new and distinct Chrysanthemum plant:

1. Upright plant habit.

2. Vigorous growth habit and rapid growth rate.

3. Dark green-colored leaves.

4. Uniform and freely flowering habit.

5. Strong upright flowering stems with numerous inflorescences.

6. Decorative-type inflorescences with bright yellow-colored ray florets that when developing are distally greyed red in color giving a bi-colored appearance to the inflorescences.

7. Relatively tolerant to high production temperatures.

8. Resistant to Fusarium Wilt and White Rust.

9. Good postproduction longevity.

Plants of the new Chrysanthemum differ from plants of the mutation parent, ‘DLFABB12’, in ray floret color as plants of the new Chrysanthemum have bright yellow-colored ray florets that when developing are distally greyed red in color whereas ray florets of ‘DLFABB12’ are red purple to purple and white bi-colored.

Plants of the new Chrysanthemum can be compared to plants of Chrysanthemum X morifolium ‘Delipinkyrock’, not patented. In side-by-side comparisons, plants of the new Chrysanthemum differ primarily from plants of ‘Delipinkyrock’ in ray floret color as plants of the new Chrysanthemum have bright yellow-colored ray florets that when developing are distally greyed red in color whereas ray florets of ‘Delipinkyrock’ are light red purple in color.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying photographs illustrate the overall appearance of the new Chrysanthemum plant showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type.

The photograph on the first sheet comprises a side perspective view of a typical flowering stem of ‘DLFABB13’ grown as a spray-type cut flower.

The photograph on the second sheet is a close-up view of upper (top of the photographic sheet) and lower (bottom of the photographic sheet) surfaces of typical leaves (left) and inflorescences (right).

DETAILED BOTANICAL DESCRIPTION

The aforementioned photographs and following observations and measurements describe plants grown during the late spring in ground beds in a glass-covered greenhouse in Maasdijk, The Netherlands and under cultural practices typical of commercial cut Chrysanthemum production. Plants were initially given long day/short night treatments followed by short day/long night treatments to induce flower initiation and development. During the production of the plants, day temperatures ranged from 18° C. to 25° C., night temperatures ranged from 20° C. to 22° C. and light levels averaged 8 klux. Plants were grown as single-stem spray-type plants and were nine weeks old when the photographs and the description were taken. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 2015 Edition, except where general terms of ordinary dictionary significance are used.

-   Botanical classification: Chrysanthemum X morifolium ‘DLFABB13 ’. -   Parentage: Naturally-occurring whole plant mutation of Chrysanthemum     x morifolium ‘DLFABB12’, disclosed in U.S. Plant Pat. No. 32,006. -   Propagation:     -   -   Type.—Terminal vegetative cuttings.         -   Time to initiate roots, summer.—About four days at             temperatures about 20° C.         -   Time to initiate roots, winter.—About six days at             temperatures about 20° C.         -   Time to produce a rooted young plant, summer.—About 13 days             at temperatures about 20° C.         -   Time to produce a rooted young plant, winter.—About 15 days             at temperatures about 20° C.         -   Root description.—Fine, fibrous; typically light brown in             color, actual color of the roots is dependent on substrate             composition, water quality, fertilizers, substrate             temperature and physiological age of roots.         -   Rooting habit.—Freely branching, medium density. -   Plant description:     -   -   Plant and growth habit.—Herbaceous decorative-type cut             flower that is typically grown as a single stem spray-type;             upright plant habit; vigorous growth habit and rapid growth             rate.         -   Plant height, soil level to top of foliar plane.—About 78.9             cm.         -   Plant height, soil level to top of inflorescence             plane.—About 83.7 cm.         -   Plant (spray) diameter.—About 20 cm.         -   Flowering stem length.—About 77.9 cm.         -   Flowering stem diameter.—About 7.5 mm.         -   Flowering stem internode length.—About 2.5 cm.         -   Flowering stem strength.—Strong.         -   Flowering stem aspect.—Erect.         -   Flowering stem texture and luster.—Densely pubescent;             slightly glossy.         -   Flowering stem color, developing.—Close to 143B to 143C.         -   Flowering stem color, developed.—Close to 146A to 146B.         -   Leaf description.—Arrangement: Alternate; simple. Length:             About 12.3 cm. Width: About 6.8 cm. Shape: Oblong to broadly             oblong. Apex: Abruptly acute. Base: Attenuate. Margin:             Palmately lobed, coarsely crenate to dentate; sinuses             convergent and medium to deep in depth. Texture and luster,             upper surface: Moderately to densely pubescent, not rugose;             moderately velvety; very slightly glossy. Texture and             luster, lower surface: Moderately to densely pubescent,             prominent venation; slightly velvety; very slightly glossy.             Venation pattern: Pinnate, reticulate. Color: Developing             leaves, upper surface: Close 137A. Developing leaves, lower             surface: Close to between 138A and 147B. Fully developed             leaves, upper surface: Slightly darker than close to between             NN137A and 147A; venation, close to 147C. Fully developed             leaves, lower surface: Close to 147B; venation, close to             146D. Petioles: Length: About 1.8 cm. Diameter: About 2 mm             by 3 mm. Strength: Moderately strong. Texture and luster,             upper and lower surfaces: Densely pubescent; slightly             glossy. Color, upper surface: Close to 146B; edges, close to             141A. Color, lower surface: Close to 146C; edges, close to             143B. Stipules: Quantity and appearance: Two leafy stipules,             opposite, at the petiole attachment to the stem. Length:             About 9 mm. Width: About 9 mm. Shape: Broadly obovate to             reniform and deeply incised to cleft. Texture and luster,             upper surface: Moderately to densely pubescent, not rugose;             moderately velvety; very slightly glossy. Texture and             luster, lower surface: Moderately to densely pubescent,             prominent venation; slightly velvety; very slightly glossy.             Color, upper surface: Slightly darker than close to between             NN137A and 147A. Color, lower surface: Close to 147B. -   Inflorescence description:     -   -   Appearance.—Decorative-type inflorescence form with obovate             to oblanceolate-shaped ray florets and tubular disc florets             (if present); inflorescences borne perpendicular to             peduncles and face mostly upright to slightly outwardly; ray             and disc florets develop acropetally on a capitulum.         -   Fragrance.—Moderately fragrant; typical of Chrysanthemums.         -   Flowering response.—Under natural conditions, plant flower             in the autumn/winter in the Northern Hemisphere; at other             times of the year, inflorescence initiation and development             can be induced under short day/long night conditions (at             least 13.5 hours of darkness); uniform flowering habit and             short response time, plants exposed to two weeks of long             day/short night conditions after planting followed by             photoinductive short day/long night conditions flower about             51 days later when grown as a spray-type.         -   Postproduction longevity.—Good postproduction longevity; in             an interior environment, inflorescences and foliage will             maintain good color and substance for about two weeks;             inflorescences persistent.         -   Quantity of inflorescences.—Freely flowering habit; when             grown as a spray-type, about 18 inflorescences develop per             flowering stem.         -   Inflorescence size.—Diameter: About 5.5 cm. Depth (height):             About 2.7 cm. Disc diameter: If present, about 2 mm;             inconspicuous.         -   Receptacles.—Height: About 6 mm. Diameter: About 8 mm.             Shape: Flattened globular. Color: Close to 145B to 145C.         -   Inflorescence buds.—Height: About 9 mm. Diameter: About             1.5 cm. Shape: Flattened globular. Texture and luster:             Distally, smooth and glabrous; proximally, moderately             pubescent; slightly glossy. Color: Close to 137A to 137B and             138A to 138B; immature ray florets, close to 22B and             distally, close to darker than 178A to 178B.         -   Ray florets.—Quantity and arrangement: About 300 arranged in             about ten whorls. Length: About 1.9 cm; varying between 1 cm             and 2.5 cm. Width: About 8 mm; varying between 0.3 cm and             1.1 cm. Shape: Obovate to oblanceolate; moderately to             strongly concave and moderately carinate. Apex: Broadly and             bluntly acute or shallowly emarginate and shallowly             praemorse. Base: Attenuate. Margin: Entire; not undulate.             Aspect: Initially upright to about 45° from vertical.             Texture and luster, upper surface: Smooth, glabrous;             moderately velvety; matte. Texture and luster, lower             surface: Smooth, glabrous; slightly velvety; slightly             glossy. Color: When opening, upper surface: Close to 7B to             7C; distally, close to 178A. When opening, lower surface:             Close to 8A to 8B; distally, close to 178A to 178B. Fully             opened, upper and lower surfaces: Close to 4B to 4C;             distally, close to 179C; venation, similar to lamina colors;             color does not change with development.         -   Disc florets.—Quantity and arrangement: If present, one or             two at the center of the receptacle; disc florets             inconspicuous. Length: About 5 mm. Diameter: About 1 mm.             Shape: Lower 80% fused into a tube; upper 20% free. Apex:             Narrowly acute. Margin, free-part: Entire. Texture and             luster, inner and outer surfaces: Smooth, glabrous; glossy.             Color, when opening, inner and outer surfaces: Distally,             close to 154D; at the apex, close to 154B; and proximally,             close to 145D. Color, fully opened, inner and outer             surfaces: Distally, close to 154D; at the apex, close to             154C; and proximally, close to 145D.         -   Involucral bracts.—Quantity and arrangement: About 26             arranged in about two whorls. Length: About 1 cm. Width:             About 4 mm. Shape: Narrowly ovate. Apex: Obtuse. Base:             Cuneate. Margin: Entire. Texture and luster, upper surface:             Smooth, glabrous; glossy. Texture and luster, lower surface:             Moderately pubescent; matte. Color, upper surface: Close to             144A; margins, translucent and close to 192D and N199A.             Color, lower surface: Close to 137A, 137B and 138A; margins,             translucent and close to 192D and N199A.         -   Peduncles.—Length, terminal peduncle: About 5.8 cm.             Diameter, terminal peduncle: About 3.5 mm. Length, third             peduncle: About 9.4 cm. Diameter, third peduncle: About             2.5 mm. Strength: Strong. Aspect, terminal peduncle: Mostly             upright. Aspect, third peduncle: About 30° from the             flowering stem axis. Texture and luster: Densely pubescent;             moderately glossy. Color: Close to 138B; venation, close to             137B.         -   Reproductive organs.—Androecium: Present on disc florets             only. Quantity: About five per floret. Filament length:             About 2 mm. Filament color: Close to 145C to 145D. Anther             size: About 0.5 mm by 1.75 mm. Anther shape: Narrowly             oblong. Anther color: Close to 14A. Pollen amount: Moderate.             Pollen color: Close to 17A. Gynoecium: Present on both ray             and disc florets. Quantity: One per floret. Pistil length:             About 1.1 cm. Style length: About 1 cm. Style color: Close             to 145C. Stigma diameter: About 1 mm. Stigma shape: Cleft,             decurrent. Stigma color: Close to 5A. Ovary color: Close to             157D.         -   Seeds and fruits.—To date, seed and fruit production have             not been observed on plants of the new Chrysanthemum. -   Pathogen & pest resistance: Plants of the new Chrysanthemum have     been observed to be resistant to Fusarium Wilt (Fusarium oxysporum     spp. chrysanthemi (FoNL1)) and White Rust (Puccinia horiana     (PhNL1)). To date, plants of the new Chrysanthemum have not been     observed to be resistant or tolerant to pests and other pathogens     common to Chrysanthemum plants grown under commercial conditions. -   Temperature tolerance: Plants of the new Chrysanthemum have been     observed to tolerate temperatures ranging from about −12° C. to     35° C. and to be suitable for USDA Hardiness Zones 8 to 10. 

It is claimed:
 1. A new and distinct Chrysanthemum plant named ‘DLFABB13’ as illustrated and described. 